ProtoDrop

Wireless Messaging for Flipper Zero Phone / Browser ⇄ ESP32 ⇄ UART ⇄ Flipper Zero

$ protodrop --status

[ONLINE]  WiFi AP Started
[ONLINE]  ESP32 Web Server Ready
[ONLINE]  UART Link Active
[READY]   Flipper Inbox Listening

Waiting for messages...

ProtoDrop is a Flipper Zero + ESP32 messaging project that lets a user connect to a local WiFi access point, send a message through a simple web interface, and have that message delivered directly to the Flipper Zero.

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System Diagram

┌──────────────┐
│ Phone/Laptop │
│ Web Browser  │
└──────┬───────┘
       │
       │ WiFi AP
       ▼
┌──────────────┐
│    ESP32     │
│ Web Server   │
│ Message RX   │
└──────┬───────┘
       │
       │ UART
       ▼
┌──────────────┐
│ Flipper Zero │
│ ProtoDrop UI │
│ Local Inbox  │
└──────────────┘

Release Status

$ protodrop --release-status

Version: v1.0
Progress: 40%

[████████░░░░░░░░░░░░]

Current Focus:
- UI redesign
- Message notifications
- Vibration alerts

First Package Release: Message Alert = Complete

Features

Feature	Description	Status
WiFi Access Point	ESP32 hosts a local network for message entry	✅ Working
Web Message Form	Simple browser page for sending messages	✅ Working
UART Communication	ESP32 sends messages to Flipper over UART	✅ Working
Flipper Inbox	Messages are displayed inside the Flipper app	✅ Working
Local Message Storage	Messages can be saved and reviewed later	✅ Working
Message Management	Read, delete, and wipe stored messages	✅ Working
New Message Alert	Flipper can notify when a message is received	🚧 Planned
Vibration Feedback	One short vibration on new message	🚧 Planned
Polished UI	Cleaner Flipper interface and menu flow	🚧 In Progress
File Transfer	Ability to transfer files to Flipper Zero	🔮 Future
Encryption	Optional secure message handling	🔮 Future

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Terminal Demo

$ protodrop listen

[OK] ProtoDrop initialized
[OK] Storage mounted
[OK] UART ready
[OK] Waiting for ESP32

> incoming message detected
> saving to inbox
> alerting user

[NEW MESSAGE] Inbox count: 1

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Project Goal

ProtoDrop is designed as a small, self-contained local messaging system for the Flipper Zero. The goal is to keep it simple, portable, and useful without needing internet access or outside infrastructure.